* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    color: #333;
    background-color: #f3f5f7;
}

li {
    list-style: none;
}

a {
    color: #333;
    text-decoration: none;
}

.wrapper {
    width: 1200px;
    margin: 0 auto;
}

.header {
    background-color: white;
}

.header .wrapper{
    height: 100px;
    padding-top: 29px;
    display: flex;
}

.header .logo {
    /* background-color: white; */
}

.header .logo a {
    display: block;
    width: 195px;
    height: 41px;
    background: url(./image/logo.jpg);
    font-size: 0;
    /* background-color: white; */
}

.header .nav {
    margin-left: 102px;
    display: flex;
    /* background-color: white; */
}

.header .nav li {
    margin-right: 24px;
    /* background-color: white; */
}

.header .nav a {
    display: block;
    padding: 6px 8px;
    /* background-color: white; */
}

.nav li .active,
.nav li a:hover {
    border-bottom: 2px solid #00a4ff;
}

.header .search {
    width: 412px;
    height: 40px;
    border-radius: 20px;
    margin-left: 64px;
    padding: 0 19px 0 12px;
    background-color: #f3f5f7;
    display: flex;
}

.header .search input {
    flex: 1;
    border: 0;
    outline: none;
    background-color: #f3f5f7;
}

.search input::placeholder {
    font-size: 14px;
    color: #999;
}

.search a {
    width: 16px;
    height: 16px;
    background-image: url(./image/屏幕截图\ 2025-03-07\ 213953.png);
    align-self: center;
}

.user {
    /* background-color: white; */
    margin:4px 32px;
}

.user img {
    vertical-align: middle;
    margin-right: 7px;
}

.user span {
    color: #666;
    font-size: 16px;
    /* background-color: white; */
}

.banner {
    background-color: #0092cb;
    height: 420px;   
}

.banner .wrapper {
    height: 420px;
    background-image: url(#);
    /* background-color: #0092cb; */
    display: flex;
    justify-content: space-between;
    padding: 0;
}

.banner .left {
    width: 191px;
    height: 420px;
    background-color: rgba(0,0,0,0.42);
    padding: 3px 20px;
}

.banner .left a {
    display: block;
    height: 46px;
    background: url(#) no-repeat right center;
    line-height: 46px;
    font-size: 16px;
    color: #fff;
    position: relative;
}

.banner .left a::after {
    content: ">";
    position: absolute;
    right: 0;
}

.banner .left a:hover {
    color: #00a4ff;
    background-image: url(#);
}

.banner .right {
    background-color: #209dd5;
    height: 305px;
    width: 218px;
    margin-top: 60px;
    border-radius: 10px;
}

.banner .right h3 {
    height: 48px;
    padding-left: 14px;
    color: #fff;
    font-size:15px;
    font-weight: 400; 
    line-height: 48px;
}

.banner .right .content {
    border-radius: 10px;
    background-color: #fff;
    height: 257px;
    padding: 14px;
}

.banner .right .content dl {
    border-bottom: 1px solid #e0e0e0;
    margin-bottom: 12px;
}

.banner .right .content dt {
    margin-bottom: 8px;
    font-size: 14px;
    line-height: 20px;
    font-weight: 700;
}

.banner .right .content dd {
    margin-bottom: 8px;
    font-size: 12px;
    line-height: 16px;
}

.banner .right .content dd span {
    color: #00a4ff;
}

.banner .right .content dd strong {
    color: #7d7d7d;
    font-weight: 400;
}

.banner .right .content a {
    display: block;
    height: 32px;
    background-color: #00a4ff;
    border-radius: 15px;
    text-align: center;
    line-height: 32px;
    font-size: 14px;
    color: #fff;
}

.recommend {
    height: 60px;
    margin-top: 11px;
    background-color: #fff;
    box-shadow: 0px 1px 2px 0px rgba(211,211,211,0.5);
    padding: 0 20px;
    line-height: 60px;
    display: flex;
}

.recommend h3 {
    color: #00a4ff;
    font-size: 18px;
    font-weight: 400;
}

.recommend ul {
    display: flex;
    flex:1;
}

.recommend  ul a {
    padding: 0 24px;
    border-right: 1px solid #e0e0e0;
    font-size: 18px;
}

.recommend ul li:last-child a{
    border: none;
}

.recommend .modify {
    color: #00a4ff;
    font-size: 16px;
    font-weight: 400;
}

.course {
    margin-top: 15px;
}

.hd {
    height: 60px;
    line-height: 60px;
    display: flex;
    justify-content: space-between;
}

.hd h3 {
    font-size: 21px;
    font-weight: 400;
}

.hd .more {
    font-size: 14px;
    color: #999;
}

.hd .more::after {
    content: " >";
}

.bd ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.bd li {
    width: 228px;
    height: 271px;
    background-color: #0092cb;
    margin-bottom: 14px;
}

.bd li .pic {
    height: 156px;
}

.bd li .text {
    height:115px;
    background-color: #fff;
    padding: 20px;
    font-size: 14px;
    line-height: 20px;
}

.bd li .text h4 {
    font-weight: 400;
    height: 40px;
    margin-bottom: 13px;
}

.bd li .text p {
    color: #999;
}

.bd li .text p span {
    color: #fa6400;
}

.bd li .text p i {
    font-style: normal;
}

.footer {
    height: 273px;
    background-color: #fff;
    margin-top: 60px;
    padding-top: 60px;
}

.footer .wrapper {
    display: flex;
    justify-content: space-between;
}

.footer .left {
    width: 445px;
}

.footer .left p {
    margin: 24px 0 14px;
    font-size: 12px;
    line-height: 17px;
    color: #666;
}

.footer .left .download {
    display: block;
    text-align: center;
    line-height: 34px;
    width: 120px;
    height: 36px;
    border: 1px solid #00a4ff;
    color: #00a4ff;
}

.footer .right {
    display: flex;
}

.footer .right dl {
    margin-left: 130px;
}

.footer .right dt {
    margin-bottom: 12px;
    font-size: 16px;
    line-height: 23px;
}

.footer .right dd {
    font-size: 14px;
    line-height: 24px;
    color: #666;
}